Type-writing machine



(No Model.)

S. COLLINS.

TYPE WRITING MACHINE.

Patented Aug. 5, 1890.

INVENTOR tween the type and the key.

UNITED STATES SAMUEL COLLINS, OF PHILADELPHIA, PENNSYLVANIA.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 433,765, dated August5, 1890.

Application filed July 7, 1888: Serial No. 279,262. (No model.)

To all whom it may concern.-

Be itknown-that I, SAMUEL COLLINS, a subject of the Queen of GreatBritain, and a resident of Philadelphia, Pennsylvania, have inventedcertain new and useful Improvements in Type-Writing Machines, of whichthe following is a full, clear, and eXact description, referencebeinghad to the annexed drawings, making part hereof.

My invent-ion relates particularly to the figures on the key-board andon the printingtypes of these machines, and is designed to facilitateand expedite the work thereof.

My invention consists in combining the number indicating the numeratorand the diagonal stroke in one type and one key of the key-board in thesame space occupied by one full-sized letter or figure. I employ a lineof small-sized figures 1, 2, 3, 4, 5, 6, 7, 8, 9, O, as well as a lineof large-sized similar figures. This line of small figures is used toindicate the denominators. The fraction is thus clearly distinguishablefrom the ordinary line of figures.

In the drawings, View 1 is in perspective and shows a Oaligraphtype-writing machine, showing also my improved key-board; View 2, adetached plan of the keys, showing the letters, figures, andpart-fractions on the keys. View 3 shows a detached type with a smallfigure 7 on its face, also a type with small 2 and diagonal line beneathit, which, with the small 7, will represent two sevenths. These beingtype-markings are in reverse. View 4 shows simply the connection-rod be-View 5 shows the impression made on the paper by a type, such as to formnumerator and inclined stroke, as in View 3, and a large 5 and theresults of two strokes from types shown in View 8 combined, making fiveand two-sevenths.

The construction of these and other machines is well known in the arts,and I will confine my description, therefore, to the parts wherein myimprovements are made. These parts are the markings on thekeys and thoseon the printing-types.

A is a line of keys with the large ordinarysized figures 1 up to 9 and0; B B, lines of letters; 0, a line of small figures adapted to formdenominators to supplement my smallsized numerators and inclinedstrokes; D, a

line of numerators from 1 to 9 in small figures, with the inclinedstrokes beside and beneath them, each figure and stroke taking up nomore than the space occupied by one whole figure, and being on onetype-face and on its one corresponding and connected key.

E E are types, F, a key. The keys containing the small separate figuresin printing can be struck to follow any figure or numerator with itsinclined mark and followed by small-sized figures until the size of thedenominator is indicated, thus enabling the operator to write adenominator of any required Size.

Heretofore separate types containing single inclined lines were used;but the figures indicating the numerators and denominators were ondifierent and separate types. It thus required two strokes to permit thenumerator and the inclined mark. I am also aware that single types, eachcontaining a whole fraction composed of numerator and denominator withhorizontal line between have been used; but to cover the whole number offrac tions this system would require alargernumber of types and keys. Itherefore do not claim either of these devices.

I am aware of the use of types to be set up in forms for printing, whichhad a numerator and a denominator, one directly above the other,separated by a horizontal line, and also that in some case. thedividing-line was joined to the foot of the numerator and in others tothe top of the denominating figure; but in each case nothing was eversaid or shown of separate types for numerator and denominator with aslanted dividing-line, and

each set forth placing the numerator above the denominator, exceptingwhen a numerator and a denominator were placed on the same line dividedby a horizontal dash. Luck ome, in his History of the Art of Printing,

speaks of joining the dividing-line to the foot of the numerator, butomits mention of a slanted line. These devices would not be convenientto use in a type-writer. I am also aware of the device for type-writingmachines set forth in United States Letters Patent No. 366,577, datedJuly 12,1887; but I do not claim any of these as my invention.

What I claim as new is- 1. In a type-writing machine, a key-boardcontaining keys the faces of Which are marked with ordinary-sizedfigures and keys the face of each of which is marked with a combinedsmall-sized figure and an inclined mark or stroke beside and beneath it,in combination with aset of impression-type correspondingly separatelymarked and connected with said keys, substantially as described.

2. In a type-writing machine, a key-board containing keys the faces ofwhich are marked with ordinary-sized figures and keys the face of eachof which is marked with a combined small-sized figure and inclined markbeside and beneath it, in combination With a line of keys the faces ofeach of which are marked with small-sized figures, also in combinationwith said keys a set of impression-types correspondingly separatelymarked and connected therewith, substantially as described.

3. In a type-writin g machine, a key-board, in combination with aset ofimpression-types, each separately marked with a figure for a numeratorand an' inclined'stroke or mark, and connected with .the keys by bars,substantially as described.

4, In a type-Writing machine, a key-board, in combination with a set ofimpression-types, some of which are marked with ordinarysized figuresand others with a figure for a SAMUEL COLLINS.

Witnesses:

SAMUEL B. CoLLINs, GEORGE E. BUcKLEY.

